Ask
your own question, for FREE!
Mathematics
31 Online
factorise x^3-x^2-5x-3=o
Still Need Help?
Join the QuestionCove community and study together with friends!
i usually attempt this type of question by trial and error. Usually my choice of guess is range from -3 to 3. Since, using x=3 is one of the factor, it help reduce the equation to this form; x^2 + 2x +1. you can solve the above equation using quadratic formula; x^3-x^2-5x-3 = (x-3)(x^2 + 2x + 1) = (x-3)(x-1)^2
to find a root you could use newton's method: x(n+1) = x(n) - f(x(n))/f'(x(n)) if you have a ti calculator try this: 2->x enter x - (x^3-x^2-5x-3)/(3x^2-2x-5) -> x enter (5 times) you should see it approach 3. This is a good way if you can't really think of a root but have a calculator. Then proceed by division as kenius describes.
where "->" is the "sto>" button
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
zebrason:
Frankie's lawn measures 38 yd by 33 yd. In the morning, he mowed 2/3 of the lawn. How many square yards of lawn did he already mow? How much is left to be mowed?
SamRoman:
What do y'all think of my Cover photo for my next YouTube video?
AlexisWolfe:
1. At the beginning of Chapter 3, Holden says, u201cIu2019m the most terrific liar you ever saw in your life.
Zayne2003:
Why was everyone there at the Tabard inn (beginning of Canterbury Tales)?
4 hours ago
0 Replies
0 Medals
4 hours ago
11 Replies
1 Medal
7 hours ago
0 Replies
0 Medals
7 hours ago
8 Replies
1 Medal